package com.base.grammardemo;
import java.util.Scanner;

public class IntegerSwitch {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int score = scanner.nextInt();
		//判断Int类型的数据
		switch (score) {
		case 5:
			System.out.println("优秀");
			break;
		case 4:
			System.out.println("良好");
			break;
		case 3:
			System.out.println("及格");
			break;
		case 2:
		case 1:
		case 0:
			System.out.println("不及格");
			break;
		default:
			System.out.println("输入的分数不是5分制的分数");
		}
	}
}